Holtek Semiconductor HT3421A
The HT3421A is a 41-key musical instrument LSI implemented in the CMOS technology. The chip provides 8 rhythms, 8 timbres, 4 pulsatile sounds, 12 demo songs, and a 62-note memory storage function. The 12 × 7 matrix control keys of the HT3421A control both basic keys and function selection inputs.| Part No. | HT3421A |
|---|---|
| Datasheet | HT3421A Download |
| Manufacturer |  Holtek Semiconductor |
| Description | 41 Matrix Key Multi-Function Piano |
| Buy | Stock & Price |
FEATURES
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● Operating voltage: 2.4V~5V System operating frequency: 512KHz 12 × 7 matrix input keys Auto power-off Power ON/OFF toggle input 41 tones, tone area: G2~B5 8 rhythms
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● 8 timbres 16 steps of tempo speed 4 pulsatile sounds 12 demo songs Memory function with 62 notes 40 pin dual-in-line package
GENERAL DESCRIPTION
In the Memory mode, the chip can store a tone of 62 notes. Pressing of the Replay key plays the stored songs, or pressing of OKP1 or OKP2 plays the stored songs tone by tone. In the Demo mode, one of the 12 demo songs can be played. The timbre of the demo song can also be altered according to the instrument chosen. Pin Assignment 1 28th June ’96 Free Datasheet HT3421A Block Diagram 2 28th June ’96 Free Datasheet HT3421A Pad Assignment Chip size: 179 × 214 (mil)2 * The IC substrate should be connected to VDD in the PCB layout artwork. 3 28th June ’96 Free Datasheet HT3421A Pad Coordinates Pad No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 U...
